inverse Mills Ratio是什么

inverse Mills Ratio 意为 逆米尔斯比率。
其计算公式为：imr=normalden(predict)/normal(predict)

inverse
[英][ˌɪnˈvɜ:s][美][ˌɪnˈvɜ:rs]
adj.相反的; 逆向的; 倒转的;
n.相反; 倒转; 相反的事物;
vt.使倒转; 使颠倒;
第三人称单数：inverses
现在进行时：inversing
过去式：inversed
过去分词：inversed
例句：
The tension grew in inverse proportion to the distance from their final destination.
拉力的大小与他们离终点的距离成反比。

ratio
[英][ˈreɪʃiəʊ][美][ˈreɪʃioʊ]
n.比例; 比，比率; 系数;
vt.求出比值，除，使…成比例; 将（相片）按比例放大[缩小];
复数：ratios
双语例句：
1 And our kill ratio would be what?
我们的射杀率会是多少?
2 See the ratio of fly larvae to silphidae beetles?
看看这些苍蝇幼虫和埋葬虫的比例?

In statistics, the inverse Mills ratio, named after John P. Mills, is the ratio of the probability density function over the cumulative distribution function of a distribution

In statistics, the inverse Mills ratio, named